WO2018021208A1 - Chariot - Google Patents

Chariot Download PDF

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Publication number
WO2018021208A1
WO2018021208A1 PCT/JP2017/026603 JP2017026603W WO2018021208A1 WO 2018021208 A1 WO2018021208 A1 WO 2018021208A1 JP 2017026603 W JP2017026603 W JP 2017026603W WO 2018021208 A1 WO2018021208 A1 WO 2018021208A1
Authority
WO
WIPO (PCT)
Prior art keywords
loading platform
traveling
cart
wheel
caster
Prior art date
Application number
PCT/JP2017/026603
Other languages
English (en)
Japanese (ja)
Inventor
豊明 長山
謙次 白井
Original Assignee
トヨタ紡織株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ紡織株式会社 filed Critical トヨタ紡織株式会社
Publication of WO2018021208A1 publication Critical patent/WO2018021208A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible

Definitions

  • the present invention relates to a carriage.
  • a cart having a plurality of casters attached to the bottom surface of the cargo bed is known.
  • a general cart has casters attached to four corners on the lower surface of a rectangular cargo bed, and a handwheel handle that is erected upward at one end of the cargo bed.
  • the two casters are rear wheels arranged near the handle for pushing, and the other two casters are front wheels facing the rear wheel.
  • the rear wheel is pivotably attached to the loading platform in order to change the direction of the carriage (universal caster).
  • the front wheel is fixed so as not to turn with respect to the loading platform (fixed caster). By applying an operating force for changing the direction to the handle, the free caster turns to change the traveling direction of the loading platform.
  • a cart that aims to improve straight running stability in order to prevent the free caster from turning unintentionally.
  • a cart disclosed in Japanese Patent Laid-Open No. 2002-53045 has a base to which a rear wheel that is a free caster is attached. The base is attached to the cargo bed so that the turning axis of the rear wheel is inclined forward in the traveling direction of the carriage with respect to the vertical line. Thereby, the straight running stability of the cart is improved.
  • the base to which the rear wheels are attached is inclined with respect to the loading platform. For this reason, the height from the wheel contact point to the loading platform during straight traveling is different from the height from the wheel contact point to the loading platform during turning. That is, the height from the wheel contact point to the loading platform during turning is higher than the height from the wheel contact point to the loading platform when traveling straight. Therefore, when changing the traveling direction of the carriage, a force for lifting the loading platform is required to turn the free caster, and the operating force increases. Therefore, there is a concern that the burden on the operator who operates the carriage increases. Such concerns are particularly noticeable when loading heavy loads.
  • the carriage has a loading platform and a plurality of casters provided on the lower surface of the loading platform. At least one of the plurality of casters is a free caster capable of turning with respect to the loading platform so as to change the traveling direction of the cart.
  • the universal caster is attached to an attachment surface provided between the traveling surface on which the wheels of the universal caster travel and the lower surface of the loading platform. The wheels of the universal caster are lifted from the traveling surface by the lifting mechanism.
  • the lifting mechanism lifts the wheel from the traveling surface, the mounting surface is changed from a parallel position parallel to the bottom surface of the cargo bed to an inclined position inclined with respect to the bottom surface of the cargo bed by the posture changing mechanism.
  • the inclined position of the mounting surface is held by the holding mechanism and released by the release mechanism.
  • the mounting surface of the free caster can be held in an inclined position when the carriage is running. This increases the straight running stability of the carriage. Since the inclination position of the mounting surface can be switched to the parallel position, the height from the wheel contact point of the free caster to the loading platform can be made substantially the same when traveling straight and when turning. Therefore, when changing the traveling direction of the carriage, the force conventionally required to lift the loading platform for turning the free caster becomes small or unnecessary. As a result, an increase in operating force that occurs when the traveling direction of the carriage is changed is suppressed.
  • the height at which the wheel of the free caster is lifted from the traveling surface by the lifting mechanism may be in a relationship in which the wheel turns and contacts the traveling surface in a posture state in which the mounting surface is inclined. Therefore, when the lifting mechanism is released, a force is generated on the wheels of the free caster to return to the angle in the straight traveling direction.
  • the force to return can be a force that assists the initial movement of the carriage. This facilitates the initial movement of the carriage 1.
  • the elevating mechanism may have a position holding function for holding the position of the loading platform by maintaining the state where the wheels are lifted from the traveling surface.
  • the state where the wheel is lifted from the traveling surface includes not only the state where the wheel is lifted from the traveling surface but also the state where the wheel contacts the traveling surface with a small force, for example, below the weight of the caster. Therefore, the carriage can be stopped at a predetermined place. This improves the convenience of the cart.
  • the posture changing mechanism may have a plate-like member that can rotate the mounting surface between a parallel position and an inclined position.
  • the holding mechanism may have a spacer that can move forward and backward between the lower surface of the loading platform and the plate-like member that faces the lower surface of the loading platform.
  • the portion where the plate member and the spacer are in contact with each other may have a tapered portion where at least one is formed in a tapered shape. Therefore, the spacer is easy to advance and retreat.
  • the carriage may have a handle for moving the loading platform.
  • the release mechanism may be provided on the handle portion. Accordingly, the release mechanism can be operated by a user's hand having a handle. Thus, the operability of the cart is improved.
  • the posture changing mechanism can be provided on a free caster near the handle. Thereby, the posture changing mechanism is easily operated by the hand of an operator holding the handle portion. Or it is a structure suitable for the trolley
  • the carriage 1 has a rectangular loading platform 10.
  • the loading platform 10 has a rectangular frame 11 formed of a steel square pipe and a loading platform upper surface 12 that covers one surface of the frame 11.
  • the rectangular frame 11 has a plurality of reinforcing portions 11a.
  • the plurality of reinforcing portions 11a are juxtaposed in the front-rear direction and extend in the left-right direction.
  • the loading platform upper surface 12 is a steel plate member, and constitutes a loading surface on which a load is placed.
  • a handle portion 16 for pushing is erected on one end of the cargo bed upper surface 12 and extends above the cargo bed 10.
  • the handle portion 16 is formed of a steel pipe in a substantially U-shaped gate shape. Both ends of the handle portion 16 are fixed to the loading platform upper surface 12. Casters 20 and 30 are attached to the four corners of the loading platform lower surface 14 respectively.
  • the two casters 30 are provided in the vicinity of the handle portion 16 for pushing and constitute a rear wheel.
  • the other two casters 20 constitute a front wheel that faces the rear wheel.
  • the front wheels (casters) 20 are attached so as not to turn with respect to the loading platform 10, and allow the loading platform 10 to advance only in the straight and backward directions (fixed casters 20). That is, the axle 26 of the fixed caster 20 extends in the left-right direction and does not move with respect to the loading platform 10.
  • the rear wheel (caster) 30 is pivotably attached to the loading platform 10 (universal caster 30). That is, the axle 36 of the universal caster 30 extends in the horizontal direction and can rotate around the turning axis 31 that stands up with respect to the traveling surface F. By applying an operating force to the handle portion 16 in the left-right direction, the universal caster 30 can turn and the traveling direction of the carriage 1 can be changed.
  • the fixed caster 20 for the front wheel and the universal caster 30 for the rear wheel both have the same configuration on the left and right. Therefore, the left caster will be mainly described, and the right caster will be denoted by the same reference numeral, and detailed description thereof will be omitted.
  • the fixed caster 20 that is the front wheel mainly includes a base 22, a pair of arms 24, an axle (support shaft) 26, and wheels 28.
  • the base 22 is formed of a flat plate member made of steel, and is connected so as to face a support bracket 29 disposed at a front corner of the cargo bed lower surface 14.
  • the pair of arms 24 extends from the base 22 vertically downward with a constant interval.
  • the axle 26 is a shaft-like member that spans the vicinity of the lower ends of the pair of arms 24.
  • the wheel 28 is a member that rolls on the traveling surface F, and is rotatably supported on the axle 26.
  • the free caster 30 which is a rear wheel mainly includes a base 32, a pair of turning arms 34, an axle (support shaft) 36, and wheels 38.
  • the base 32 is a flat plate member made of steel.
  • the pair of swivel arms 34 extends vertically downward from the base 32 at a constant interval in the horizontal direction. A portion connecting the upper portions of the pair of swing arms 34 is supported so as to be swingable about the swing axis 31 with respect to the base 32.
  • the axle 36 is a shaft-like member spanned near the lower end of the turning arm 34.
  • the axle 36 is located away from the turning axis 31 and rotates around the turning axis 31 so as to be positioned in either the front, rear, left or right direction of the turning axis 31.
  • the wheel 38 is a member that rolls on the traveling surface F, and is rotatably supported on the axle 36.
  • the carriage 1 has a mounting structure in which the universal caster 30 is attached to the loading platform 10.
  • the mounting configuration includes a support bracket 40 and a plate-like member 44 that are connected by a hinge mechanism 42.
  • the support bracket 40 is attached to each of the rear left corner and the rear right corner of the loading platform lower surface 14.
  • the support bracket 40 is a rectangular flat plate member made of steel and is connected so as to face the cargo bed lower surface 14.
  • the hinge mechanism 42 is provided at the rear end portion of the support bracket 40, and the plate-like member 44 is connected to the hinge mechanism 42. Thereby, the rear part of the plate-shaped member 44 is rotatably connected to the loading platform 10, and the front part of the plate-shaped member 44 moves in the vertical direction.
  • the plate member (mounting plate) 44 is a steel plate member and is disposed below the support bracket 40.
  • the plate-like member 44 rotates around the hinge mechanism 42 to rotate between a position facing in parallel with the support bracket 40 and a position where the front end side 44A is separated from the support bracket 40 to form an opening.
  • the base 32 of the free caster 30 is connected to the lower surface of the plate member 44. That is, the plate-like member 44 has an attachment surface 45 that faces the base 32 of the universal caster 30.
  • An engaged portion 46 that engages with the rotating bracket 50 is provided at the front end portion of the plate-like member 44.
  • the engaged portion 46 has a tapered portion 48 that is gradually inclined forward.
  • the rotating bracket 50 is rotatably attached to a rotating shaft 51 provided on the support bracket 40.
  • the rotating shaft 51 extends in the vertical direction, and the rotating bracket 50 rotates in the horizontal direction around the rotating shaft 51.
  • the rotating bracket 50 is located in front of the plate member 44.
  • the rotary bracket 50 includes a spacer (engagement portion) 52, an inner hook portion 54, and a spring hook portion 56 as arm-like portions extending radially from the rotary shaft 51 in three directions.
  • the spacer 52 extends laterally from the rotating shaft 51 and extends rearward.
  • the spacer 52 engages with the engaged portion 46 provided at the front end of the plate-like member 44.
  • a tapered portion 53 is formed at the tip of the spacer 52.
  • the spring hook 56 extends forward from the rotating shaft 51.
  • One end of the spring 58 is hooked on the middle part of the spring hook 56.
  • the other end of the spring 58 is hooked on a mounting piece 41 extending forward from the front end of the support bracket 40.
  • the spring 58 biases the rotary bracket 50 counterclockwise in FIG.
  • the rotary bracket 50 is urged in a direction in which the spacer 52 of the rotary bracket 50 enters the opening formed between the plate-like member 44 and the support bracket 40.
  • an inner hook 54 is formed on the rotary bracket 50 located in the left rear region of the carriage 1.
  • the inner hook 54 extends laterally away from the spacer 52 from the rotating shaft 51 and extends rearward.
  • One end of the first cable 110 is hooked on the inner hook portion 54.
  • the first cable 110 has a double structure, and includes a linear inner member 110a and a tubular outer member 110b through which the inner member 110a is inserted.
  • One end of the inner member 110 a is hooked to the inner hook portion 54, and one end of the outer member 110 b is hooked to the support bracket 40.
  • the other end of the inner member 110 a and the other end of the outer member 110 b are connected to an operation unit 18 provided in the vicinity of the handle portion 16.
  • the left and right rotating brackets 50 are connected to the second cable 120 so as to be synchronized with each other.
  • the second cable 120 has a double structure, and includes a linear inner member 120a and a tubular outer member 120b through which the inner member 120a is inserted.
  • the left and right ends of the inner member 120a are hooked on the tip portions 57 of the spring hook portions 56 of the left and right rotating brackets 50, respectively.
  • the left end of the outer member 120 b is hooked on the mounting piece 41 of the left support bracket 40.
  • the right end of the outer member 120 b is hooked on the second mounting piece 43 of the right support bracket 40.
  • the second mounting piece 43 extends forward from the left front end of the right support bracket 40. Therefore, as the left rotating bracket 50 rotates, the right rotating bracket 50 rotates in synchronization.
  • the elevating mechanism 60 has a position holding function for preventing the carriage 1 from moving by lifting the loading platform 10 and holding it at the raised position.
  • the elevating mechanism 60 has a nested structure, and includes an inner pipe 60a, an outer pipe 60b into which the inner pipe 60a is inserted, and a foot pedal 62. One end of the foot pedal 62 is rotatably connected to the outer pipe 60b. The upper end of the outer pipe 60 b is connected to the lower surface of the loading platform 10.
  • the foot pedal 62 has a force conversion mechanism 62a that moves downward with respect to the outer pipe 60b by moving the inner pipe 60a downward with respect to the outer pipe 60b.
  • the force conversion mechanism 62a has one such as a cam, a link, a rack and a pinion, for example.
  • the position holding function includes, for example, a fixing mechanism (stopper) that restricts relative movement between the inner pipe 60a and the outer pipe 60b.
  • the fixing mechanism regulates the relative movement of the inner pipe 60a and the outer pipe 60b by moving the foot pedal 62 from the upper position to the lower position, for example.
  • the stopper is released by moving the foot pedal 62 in the lower position further downward, and the foot pedal 62 moves to the original upper position.
  • the inner pipe slides downward relative to the outer pipe 60b.
  • the lower end of the inner pipe 60a comes into contact with the traveling surface F, and the rear part of the cargo bed 10 is lifted by the inner pipe 60a moving further downward with respect to the outer pipe 60b.
  • the wheel 38 of the free caster 30 is slightly lifted from the traveling surface F.
  • the foot pedal 62 has a fixing function of temporarily fixing the length of the lift mechanism 60 extended, and holds the loading platform 10 at the raised position.
  • the inner pipe 60a slides into the outer pipe 60b by the elastic body interposed in the elevating mechanism 60.
  • the wheel 38 of the free caster 30 contacts the traveling surface F, and the carriage 1 can travel.
  • the mounting surface 45 of the plate-like member 44 is located at a parallel position 45 ⁇ / b> A parallel to the support bracket 40. Therefore, the swivel axis 31 of the universal caster 30 is vertical.
  • the loading platform 10 is lifted.
  • the loading platform 10 is lifted and the wheels 38 are separated from the traveling surface F.
  • the plate-like member 44 rotates around the hinge mechanism 42 by its own weight, and the mounting surface 45 assumes a posture of an inclined position 45B inclined with respect to the cargo bed lower surface 14 (posture changing mechanism, posture changing means).
  • an opening is formed between the front end side 44 ⁇ / b> A of the plate-like member 44 and the support bracket 40.
  • the rotating bracket 50 is rotated by the bias of the spring 58, and the spacer 52 of the rotating bracket 50 enters between the front end of the plate-like member 44 and the support bracket 40 and engages with the engaged portion 46.
  • the rotating bracket 50 is held in engagement with the engaged portion 46 (holding mechanism, holding means) by the biasing force of the spring 58 and the frictional resistance between the spacer 52 and the engaged portion 46. Therefore, the posture of the inclined position 45B of the plate member 44 is maintained.
  • the swivel axis 31 of the free caster 30 is inclined forward with respect to the traveling direction of the carriage 1. Therefore, the straight traveling stability of the cart 1 is high.
  • the mounting surface 45 is at the inclined position 45B, the distance from the grounding point of the wheel 38 to the loading platform 10 during the turning shown in FIG. 5 is higher than the height from the grounding point of the wheel 38 to the loading platform 10 when traveling straight as shown in FIG. The height is higher. Therefore, in order to turn the carriage 1, a force for lifting the loading platform 10 is required.
  • the operation unit 18 (release mechanism, release means) shown in FIG. 1 is operated.
  • the left and right rotating brackets 50 rotate in a direction in which the spacer 52 is disengaged from the engaged portion 46. That is, the spacer 52 of the rotary bracket 50 is separated from the engaged portion 46 of the plate member 44 against the bias of the spring 58. Therefore, the state in which the inclined position 45B of the mounting surface 45 is held is released. Then, the mounting surface 45 rotates from the inclined position 45B (see FIG. 4) to the parallel position 45A (see FIG. 3). Thereby, when turning the trolley
  • the cart 1 is configured such that the mounting surface 45 to which the universal caster 30 is attached is inclined with respect to the cargo bed lower surface 14 from a parallel position 45A parallel to the cargo bed lower surface 14 between the cargo bed lower surface 14 and the traveling surface F.
  • a posture changing mechanism capable of changing the posture to the position 45B is provided.
  • the posture changing mechanism changes the mounting surface 45 from the parallel position 45A (see FIG. 3) to the inclined position 45B (see FIG. 4) when the wheel 38 is lifted from the traveling surface F by the elevating mechanism 60.
  • the carriage 1 has a holding mechanism that holds the mounting surface 45 at the inclined position 45B.
  • the cart 1 includes an operation unit 18 (release mechanism) that releases a state in which the inclined position 45B of the mounting surface 45 in the holding mechanism is held. Therefore, the mounting surface 45 can be switched from the inclined position 45B to the parallel position 45A. Therefore, the height from the grounding point of the wheel 38 of the free caster 30 to the loading platform 10 can be made substantially the same when traveling straight and when turning. Therefore, when changing the traveling direction of the carriage, it is not necessary to apply a force for lifting the loading platform 10 in order to turn the universal caster 30. Thus, an increase in the operation force of the carriage 1 can be suppressed.
  • the height at which the wheel 38 of the free caster 30 is lifted from the traveling surface F by the lifting mechanism 60 is related to the relationship in which the wheel 38 turns and contacts the traveling surface F when the mounting surface 45 is in the inclined position 45B. Is the height. For this reason, the wheel 38 of the universal caster 30 generates a force that converts it into the straight direction when the lifting mechanism 60 is released. Therefore, the force can assist the initial movement of the carriage 1.
  • the elevating mechanism 60 has a position holding function for holding the position of the loading platform 10 by maintaining the state where the wheels 38 are lifted from the traveling surface F. Therefore, the cart 1 can be stopped at a predetermined location. Thus, the convenience of the cart 1 is high.
  • the portion where the plate-like member (mounting plate) 44 and the spacer (engagement portion) 52 are in contact with each other has tapered portions 48 and 53 each having a tapered shape. Therefore, the spacer 52 is easy to advance and retreat.
  • the operation unit 18 (release mechanism) is constituted by the handle unit (handle) 16, the user can easily operate the operation unit 18.
  • the mechanism described above is particularly suitable for the cart 1 that loads a heavy load.
  • the height at which the free caster 30 is lifted by the elevating mechanism 60 may be a height that turns the wheel 38 so as to contact the traveling surface F as described above, or is higher than that. Even if it turns, the height which does not touch the running surface F may be sufficient. In order to smoothly assist the initial movement of the carriage, it is desirable that the free caster 30 turns and is in contact with the traveling surface F.
  • the carriage 1 has two free casters 30 and two fixed casters 20 as described above. Instead of this, the cart 1 may have three or five or more casters. And you may have one or three or more free casters.
  • the carriage 1 has a free caster 30 as a rear wheel as described above. Instead of this, the cart 1 may have a free caster as a front wheel or a free caster as both a front wheel and a rear wheel.
  • the spacer 52 has a tapered portion 53, and the engaged portion 46 of the plate-like member (mounting plate) 44 has a tapered portion 48. Instead, only one of the taper part 53 and the taper part 48 may be provided.
  • the carriage 1 has a first cable 110 as a wire cable in order to convert the force applied to the operation unit 18 into tilting of the plate-like member 44.
  • the cart 1 may have a wire cable having another configuration instead of the first cable 110, or may have a link mechanism or another mechanism.
  • the carriage 1 has a second cable 120 that the left and right rotating brackets 50 are synchronized with each other.
  • the cart 1 may have a wire cable having another configuration instead of the second cable 120, or may have a link mechanism or another mechanism.
  • the rotating bracket 50 is rotated by pulling the first cable 110 as a configuration for releasing the engaged state between the spacer 52 of the rotating bracket 50 and the engaged portion 46 of the plate-like member 44.
  • another mechanism may be provided, for example, a mechanism for releasing the rotary bracket 50 by directly rotating it with a hand or a foot may be provided.
  • the elevating mechanism 60 has a telescopic bar member extending from the carriage 1 as described above. Instead of this, the elevating mechanism 60 may have a link mechanism and a pantograph mechanism extending from the carriage 1.
  • the lifting mechanism 60 may be a manual type as described above, or an electric type having a motor or the like.
  • the carriage 1 has a handle 16 at the rear part of the loading platform 10 as described above.
  • the cart 1 may have a handle portion at the front portion of the loading platform 10, or may have a handle portion at both the front portion and the rear portion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

L'invention concerne un chariot (1) comportant de multiples roulettes installées sur la surface inférieure d'une plate-forme de chargement (10). Au moins l'une des multiples roulettes est une roulette universelle (30) apte à pivoter par rapport à la plate-forme de chargement (10) de façon à modifier la direction de déplacement du chariot (1). La roulette universelle (30) est fixée à une surface de fixation (45) disposée entre une surface de déplacement (F), sur laquelle se déplace une roue de la roulette universelle (30), et la surface inférieure de la plate-forme de chargement (10). La roue de la roulette universelle (30) est soulevée de la surface de déplacement (F) par un mécanisme de levage (60). Lorsque la roue est soulevée de la surface de déplacement (F) par le mécanisme de levage (60), la surface de fixation (45) est modifiée par un mécanisme de changement de position (42) d'une position parallèle, parallèle à la surface inférieure de la plate-forme de chargement (10), à une position inclinée, inclinée par rapport à la plate-forme de chargement (10). La position inclinée de la surface de fixation (45) est maintenue par un mécanisme de retenue (46, 52) et est libérée par un mécanisme de libération (18).
PCT/JP2017/026603 2016-07-25 2017-07-24 Chariot WO2018021208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016145270A JP6249059B1 (ja) 2016-07-25 2016-07-25 台車
JP2016-145270 2016-07-25

Publications (1)

Publication Number Publication Date
WO2018021208A1 true WO2018021208A1 (fr) 2018-02-01

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PCT/JP2017/026603 WO2018021208A1 (fr) 2016-07-25 2017-07-24 Chariot

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CN (1) CN207292062U (fr)
WO (1) WO2018021208A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6912693B1 (ja) * 2021-02-17 2021-08-04 旭エンジニアリング株式会社 荷物運搬台車

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08156506A (ja) * 1994-12-08 1996-06-18 Sekisui House Ltd 移動キャスター
JPH1148978A (ja) * 1997-08-06 1999-02-23 Meiwa Denki:Kk 車輪のロック機構
JP2001130204A (ja) * 1999-11-06 2001-05-15 Hisatoho Oogawara 自在キャスタと自在キャスタを取り付けた車両
JP2005349906A (ja) * 2004-06-09 2005-12-22 Honko Mfg Co Ltd 運搬用台車
KR20070101184A (ko) * 2006-07-14 2007-10-16 박경희 무베어링 캐스터
US20100031467A1 (en) * 2006-06-30 2010-02-11 James Pollard Castor assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08156506A (ja) * 1994-12-08 1996-06-18 Sekisui House Ltd 移動キャスター
JPH1148978A (ja) * 1997-08-06 1999-02-23 Meiwa Denki:Kk 車輪のロック機構
JP2001130204A (ja) * 1999-11-06 2001-05-15 Hisatoho Oogawara 自在キャスタと自在キャスタを取り付けた車両
JP2005349906A (ja) * 2004-06-09 2005-12-22 Honko Mfg Co Ltd 運搬用台車
US20100031467A1 (en) * 2006-06-30 2010-02-11 James Pollard Castor assembly
KR20070101184A (ko) * 2006-07-14 2007-10-16 박경희 무베어링 캐스터

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JP6249059B1 (ja) 2017-12-20
JP2018016090A (ja) 2018-02-01
CN207292062U (zh) 2018-05-01

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